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Supplier ABB Electrick Motor,ABB is the world’s largest supplier of drives, with the pump into the single largest application area. About a quarter of ABB drives are used in the pump; energy savings from these drives totaling about 11 billion kWh per year. Every year, quite ABB drives installed in pump applications to remove the entire flow of the Nile by an amazing 40 meters.

in 1689 The physicist Denis papin invented the centrifugal pump and today this kind of pump is the most used around the world. The centrifugal pump is built on a simple principle: liquid is led to the impeller hub and by means of the centrifugal force it is flung towards the periphery of the impellers,

The construction is fairly Inexpensive,robust and simple and its high speed makes it possible to connect the pump directly to an asynchronous motor. The centrifugal pump provides a steady liquid flow,and it can easliy be throttled without causing any damage to the pump.

Now let us have a look at figure , which shows the liquid’s flow through the pump. The inlet of the pump leads the liquid to the center of the rotating impeller fom where it is flung towards the periphery. This construction gives a high efficiency, and is suitable for handing pure liquids. Pumps,which have to handle impure liquid’s,such as wastewater pumps, are fitted with an impeller that is constructed especially to avoid that objects get stocked inside the pump.